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windowscodecs: Implement conversion from 8bppIndexed to 32bppBGRA.

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This commit is contained in:
Vincent Povirk 2009-08-13 14:07:04 -05:00 committed by Alexandre Julliard
parent 9c1db8d828
commit 4d1e72d0b3
2 changed files with 56 additions and 0 deletions
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55
dlls/windowscodecs/converter.c
View File

@ -38,6 +38,7 @@ struct FormatConverter;
enum pixelformat {
format_1bppIndexed,
format_4bppIndexed,
format_8bppIndexed,
format_16bppBGR555,
format_16bppBGR565,
format_24bppBGR,
@ -189,6 +190,59 @@ static HRESULT copypixels_to_32bppBGRA(struct FormatConverter *This, const WICRe
return res;
}
return S_OK;
case format_8bppIndexed:
if (prc)
{
HRESULT res;
UINT x, y;
BYTE *srcdata;
UINT srcstride, srcdatasize;
const BYTE *srcrow;
const BYTE *srcbyte;
BYTE *dstrow;
DWORD *dstpixel;
WICColor colors[256];
IWICPalette *palette;
UINT actualcolors;
res = PaletteImpl_Create(&palette);
if (FAILED(res)) return res;
res = IWICBitmapSource_CopyPalette(This->source, palette);
if (SUCCEEDED(res))
res = IWICPalette_GetColors(palette, 256, colors, &actualcolors);
IWICPalette_Release(palette);
if (FAILED(res)) return res;
srcstride = prc->Width;
srcdatasize = srcstride * prc->Height;
srcdata = HeapAlloc(GetProcessHeap(), 0, srcdatasize);
if (!srcdata) return E_OUTOFMEMORY;
res = IWICBitmapSource_CopyPixels(This->source, prc, srcstride, srcdatasize, srcdata);
if (SUCCEEDED(res))
{
srcrow = srcdata;
dstrow = pbBuffer;
for (y=0; y<prc->Height; y++) {
srcbyte=(const BYTE*)srcrow;
dstpixel=(DWORD*)dstrow;
for (x=0; x<prc->Width; x++)
*dstpixel++ = colors[*srcbyte++];
srcrow += srcstride;
dstrow += cbStride;
}
}
HeapFree(GetProcessHeap(), 0, srcdata);
return res;
}
return S_OK;
case format_16bppBGR555:
if (prc)
{
@ -370,6 +424,7 @@ static HRESULT copypixels_to_32bppBGR(struct FormatConverter *This, const WICRec
static const struct pixelformatinfo supported_formats[] = {
{format_1bppIndexed, &GUID_WICPixelFormat1bppIndexed, NULL},
{format_4bppIndexed, &GUID_WICPixelFormat4bppIndexed, NULL},
{format_8bppIndexed, &GUID_WICPixelFormat8bppIndexed, NULL},
{format_16bppBGR555, &GUID_WICPixelFormat16bppBGR555, NULL},
{format_16bppBGR565, &GUID_WICPixelFormat16bppBGR565, NULL},
{format_24bppBGR, &GUID_WICPixelFormat24bppBGR, NULL},

1
dlls/windowscodecs/regsvr.c
View File

@ -791,6 +791,7 @@ static struct regsvr_decoder const decoder_list[] = {
static GUID const * const converter_formats[] = {
&GUID_WICPixelFormat1bppIndexed,
&GUID_WICPixelFormat4bppIndexed,
&GUID_WICPixelFormat8bppIndexed,
&GUID_WICPixelFormat16bppBGR555,
&GUID_WICPixelFormat16bppBGR565,
&GUID_WICPixelFormat24bppBGR,